Individual Study / Ben Neriah et al.; JMIR Mhealth Uhealth. 2019

Weight Loss Following Use of a Smartphone Food Photo Feature: Retrospective Cohort Study

Weight Loss Following Use of a Smartphone Food Photo Feature: Retrospective Cohort Study

Initiatives -
The aime was to determine the effectiveness of using photography as a feature of a smartphone weight loss app to track food intake in adults who were overweight or obese. Note: All published information has been collected from the article referenced in the Marker Paper box below. Therefore, there may be variations with more advanced versions of the study.
Start Year
2016
Funding
Funding was provided by the Obesity Society through the Weight Watchers Karen Miller-Kovach Research Grant to AG.

Design

Study design
Population cohort

Marker Paper

Ben Neriah D, Geliebter A. Weight Loss Following Use of a Smartphone Food Photo Feature: Retrospective Cohort Study. JMIR Mhealth Uhealth. 2019;7(6):e11917. Published 2019 May 29. doi:10.2196/11917

PUBMED 31199300

Recruitment

Sources of Recruitment
  • Individuals

Number of participants

Number of participants
123,787
Number of participants with biosamples

Access

Availability of data and biosamples

Data
Biosamples
Other

Timeline

Population

We analyzed data from individuals (age, 18-65 years; body mass index≥25 kg/m2; ≥4 days of logged food intake; and ≥2 weigh-ins) who used a mobile-based weight loss app.
Selection Criteria
Minimum age
18
Maximum age
65
Newborns
Twins
Countries
  • United States of America
Ethnic Origin
Health Status
Other criteria
individuals who were overweight or obese

Recruitment

Sources of recruitment
  • General population

Number of participants

Number of participants
123,787
Number of participants with biosamples
Data Collection Event
We aimed to determine the effectiveness of using photography as a feature of a smartphone weight loss app to track food intake in adults who were overweight or obese
Start Date
2016-11
End Date
2017-04
Data sources
  • Mobile data collection
    • Smartphone apps